I love openSUSE and think it’s one of the few distros that has a pretty good implementation for every DE/WM. GNOME, KDE, Xfce, lxqt, enlightenment, mate, sway, etc… are all a solid experience on openSUSE.
That said, I have never found a distro with a good Cinnamon experience other than Linux Mint. Probably in part due to cinnamon being developed by mint, but regardless, if you want to use cinnamon, mint is your best option.
The main issue with Usenet is retention. I don’t mean that you should worry too much about retention on your particular providers, but just as a general concept the idea that after 10-15 years files go away means that it can be tough to find older media, especially media that is not popular enough for people to reupload.
People always talk about needing multiple servers but I just use Astraweb and I have been fine. I have a block plan on another server somewhere but I honestly didn’t even set it up when I reconfigured nzbget.
Movies and TV shows have been super easy to find on Usenet, but even with a couple private indexers I have found music and books to be hit or miss. I use Tidal with Plex and the $10 per month has been worth it to me simply because I listen to a ton of different music. That said, probably 80% of what I listen to has been available on Usenet.
I read a lot of nerdy books (fantasy and sci-fi) and that’s been easy enough to find, but my wife’s more mainstream tastes have actually been trickier.
I love Tidal + Plex. I already had a Plex server set up, but the integration with tidal is great. Good music quality, pays the artists well, and no gaps in the library that aren’t also there in the other services. When you add Plex you can then fill in those gaps with your own music files.
I use Linux but the only issues I have are 1) lower quality, since the best quality is usually restricted to Chrome and Edge on Windows and Max, and 2) no downloads.